proper service的用法和样例：
例句
- Administrations for the transmission of facsimile documents in both directions between subscribers to the telefax service and public facsimile bureaux.
本建议为用户传真业务和用户与公众传真局之间双向传送传真文件，制订主管部门所适用的计费原则和国际结算原则。 - The same department in charge of civil servants at all levels to guide the work of the organs of the civil service management.
各级公务员主管部门指导同级各机关的公务员管理工作。
